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J. C. FRENCH.

MIXING MACHINE.

APPLICATION mu) mm. I915.

Patented Aug. 26, 1919.

-SHEET I.

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Patented Aug. 26, 1919.

2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

JAMES C. FRENCH, 0F KENOSHA, WISCONSIN, ASSIGNOR T0 FREDERICK C. AUSTIN, OF CHICAGO, ILLINOIS.

mrxmenaonmn.

Specification of Letters Patent.

Patented Aug. 26, 1919.

To all whom it may concern:

Be it known that I, JAMEs C. FRENCH, a citizen of the United States of America, and resident of Kenosha, Kenosha county, Wisconsin, have invented a certain new and useful Improvement in Mixing-Machines, of which the following is a specification.

My invention relates to mixing machines of that kind in which the rotary receptacle is provided with an opening forboth receiving the materials and discharging the batch after the mixing operation is completed. In a mixing machine of this general character, the said receptacle is usually mounted to be tilted into one position for receiving the materials and for rotation in this position to produce the mixture, and the said receptacle is also capable of tilting movement in the other direction to bring the said opening into position for discharging the batch. Ordinarily, the said receptacle or tub-like container is annular in character, and is arranged to tilt about a horizontal axis which is coincident, or approximately so, with the axis of rotation of the receptacle.

An object of my invention is to provide a mixing machine of this kind in which the said receptacle approximates a cube to a certain extent, or is semi-cubical in form, thereby increasin the efficiency of the machine.

Another 0 ject of the invention is to provide an improved construction and arrangement whereby the receptacle tilts about an offset axis to bring the opening thereof into a low position for charging the receptacle, thereby facilitating the introduction of the materials into the receptacle, and into a relatively high position for discharging the batch, as will hereafter more fully appear.

It is also an object to provide certa n details and features of construction tending to increase the general efliciency and serviceability of a mixing machine of this particular character.

To the foregoing and other useful ends my invention consists in matters hereinafter set forth and claimed.

In the accompanying draWings- Figure 1 is a side elevation of a mixing machine embodying the principles of my invention.

Fig. 2 is a plan of the machine shown in Fig. 1, showing the forward portion thereof broken away for convenience of illustration.

Fig. 3 is an end elevation ofthe said machine.

Fig. 4 is a detail sectional view of the bottom of the receptacle.

Fig. 5 is a bottom plan view of the receptacle.

As thus illustrated, my invention comprises a body A, and as the machine is designed for use on the street, and to be moved from place to place, the said body is preferably provided with front and rear wheels a'and B of any suitable character. The upright frames C and D are suitably mounted on the said body, and arranged to support between them the swinging frame E, the latter being provided with trunnions e carried at the upper ends of said upright frames. The rotary receptacle F is of any suitable or known shape, cubiform or semicubiform, as shown, and is provided in the flat bottom thereof with a fixed cylindric member or stem which extends through the supporting frame E and is'provided at its lower end with a reduced portion having a retaining nut G, a ball-bearing 9 being arranged on top of the frame E to support the said receptacle, and the said member or stem f forming the axis of said bearing, whereby the receptacle is adapted to rotate about a central axis. For this purpose one of the trunnions e is provided with a short shaft H extending centrally thereof, said shaft having a bevel gear 7:. for engaging the bevel gear ring I which is'secured to and encircles the said receptacle. A sprocket connection J connects the outer end of this shaft with the engine K, these elements being of any suitable or desired character. The receptacle has a round top opening F which serves as both a charging opening and a discharge outlet. iVith this arrangement the said receptacle is driven by the engine during the mixing operation.

In order that the said receptacle or tublike container F may efficiently mix the materials, the form or construction thereof is as follows: Starting with a cube, three adjacent sides thereof 1, 2 and 3 form the lower sides of the receptacle. The other sides of the tube 4, 5 and 6 are expanded outward slightly and connected by intermediate rounded corners 7 whereby a round opening 8 is formed at the top of the receptacle, the center of said opening being approximately will also, be seen that the said cube .is still fiat surface 9; and the other three at. angl sition, the receptacle ,ii V y y completed; the s aidreceptacle is': sthenvswungx;

further distorted by the cuttingofi' of the corner portion which is diametricallyopposite the said opening, thereby providing'the triangular bottom surface 9 as shown in Fig. 5. In this Way. and as stated, three of the sides. of the cube, 1, 2 and 3, are leftperfectly flat, but arereduced from a perfect square in each case by'the formation of th'e surfaces of the said imaginarycube, 4c{ and 6, are distorted by the outward bulging thereofl' which distortion" -i's"'*neces sary' 'in forder to taper the receptacle into the rim of s'aid. opening -t'li'at-'is to say. in order to fiprovidgla side walls which 'apprdmmatm the tid three sides oss'essed-kit side surfaces v i n the receptacle is" rotated shown in FigzB servea manner whieh will b and o certain extent be ordinary arid -wel on openirrg for chargin c'v'o'for discharging the;-

b mater-ialsynotwitlistanding the tactthat ,h'e" shape of l thereceptacleiapproxiniates t rge=extentitheiforrnibfaicubew peci'ail. ihmproyeme tf, an in'gTthe.areceptaoleminto; unto d umpingrpositio. ws' :;"I":l1e1 fi?ame:-;E is d receivingipositioh s provided-" a to fleeted onevsidei atitsxcenteri,jasg'showvin i Fig!- 2:;sso1rtliatutl1ez axiseo' rotatiomot the-v receptacles is' some" distance to; one; sideeo'f th iprovided' by theatrunnions .herebyffthenentire receptaclesis'yzlowered to:

' z tilted==int materials; y 'mfter the Y over- 'to I theother side of the inachine; and into= the inverted position shown 11i dotted lines id F 3g =wherebyzthe receptacle is at this time in=a higher position than would be the caseshould'the tiltingaxis be located; exactly at the center of the receptacle; and

extend directly o2 thef., V 7

trunnion at the end of the'machine can be provided with a fixed gear wheel L, which is segmental in form and PTOVlC led Wltll Li/WO large teeth l which limit the tilting inovementmof. the receptacle, teeth cannot pass the pinion M which operates the saidgea-r wheel. A hand .wheel m is provided forrotating the pinion M when .1 it is desired to tilt the machine to ;durnping iposition, it being understood that the ofit'set aizarrange'ment of the tilting axis causesjthe receptacle to remain of its own weight in charging and rotatingposition, as shown in 1 111 lines in Fig. 3-; and in this connection it Ill be understood that in Figs. 1 and2 the e ,gearing is assumed to have been operat'editoan extent sufficient to bring the recejptacle intoan upright position with its gaXiSrlOf rotation exactly vertical,v whereby the shape' of the. receptacle is more clearly shown. p v

' {The bottom of the said receptacle is provided with an inner extension N which sur--- rolmdsihe pin or'axis member 7", and which hpldsgthe latter very solidly and firmly in P ber made a rigid part of the receptacle buiathe weightgof the receptacle is sustainedby the ballgbearing g in the man- $1, 9 advantages astpr r m y 510M153 zit fobserr glrthat; h

tacle is tilted in the opposite; and unto, charging position-,;th,e tt hereof is tO h nithersee cle fii'h jl dtl the Qp- 1 posite direction" for discharging the dad.

With. theaconstruction shown,.-,and described; the receptacle F has an open 'top and [aclosed bottom so that ithas only one open- Thus the pin or cylindric axis mem- I will be seeii tthat a ing for either inlet or outlet purposes. Furthermore, the said receptacle is mounted to 'tilt about a horizontalaxis located a dis tance above the bottom of the,receptacle, so

that the latter is in low position for loading. Also, this brings the mouth of the receptacle into a suitably elevated position for discharging the batch. By reason of the'ofiset axi'sthat is to say, the horizontal axis aboutwhich the receptacle tilts, the weight of the receptacle tends to make it gravitate in one direction only, when in a horizontal or upright position, as the weight is considerabl greater at one side than at the other. in I axis of tilting motion is located some distance from the upright axis about which the receptacle rotates, so that the two axes do not intersect each other. Thus, the said horizontal, axis of-tilting motion is not only some distance above the: bottom of the receptacle, as well as some distance below the top of the receptacle, but is also located'at some distance from the center of the recep tacle, bein'gmuchnearer one sideofthe receptacle than the other. With the construction shown and'gdescribed, it will be seen I that the horizontal axis of the bail-shaped frame E and the vertical axis of the recep-' tacle-F are not in the same vertical plane, when the receptacle is horizontal, but are in different vertical planes and spaced apart a distance sufficient to unbalance, the recep tacle, in the manner explained.

.What I claim as my invention 1s: a

1. A mixer comprising a rotary receptacle of cube 'form having one corner thereof cut ofito provide a triangular b'ottomand hav ing the, opposite corner cut off and shaped to form a top having a round receivinganddischarge opening, so that when w v ewed from above said receptacle, is an equal sided 'hexagon'in outline, and havingpthe'ax1s of rotation thereof extendingthrough thereceptacle 'at' the center of said base and at the center of said opening, which axls 1s vertical when the bottomand top are level.

I p 2. A mixer comprising a receptacle having 'a closed bottom and, a receiving and discharge opening at-the top thereof, a support 'upon which said receptacle is mounted to rotate about an axis extending through said base and opening,j'which,axis is vertical its when the open topr is "level, and means 'to stilt said support about a horizontally disposed 'axis-atone-side of said vertically-dis posed axis of rotation, said horizontal axis i and said vertical axisbeing in different ver- 'tical planes in orderthat the receptacle 60"when in horizontal position and "-whenits other words, the said horizontal shaped pinion.

of the ring'and the axis of the pinion are in separate vertical planes when the ring 15 in horizontal position, and means to ro- ,tate said pinion to rotate said receptacle.

4. The structure specified in claim 2, m.

which said support. is depressed a'distance and also laterally displaced relatively to the axis thereof, so that said support is bailshaped with its middle at one side of the vertical plane of the horizontal axis when the receptacle is upright, and in which said base of the-receptacle has a bearing on said laterally displaced portion of said support, thereby. to bringthe center of gravity to one side of the axis of said support when said receptacle is in an upright position.

.5. In a mlxmg machine, the combination of trunnion bearings, a bail-shaped member supported by .said bearings, a receptacle having an open top-and a closed bottom, a

at right an member, the axis of said receptacle being spaced a distance from the other axls,

whereby the receptacle is unbalanced and "bearing on said bail-shaped member for the bottom of said receptacle, so that said re ceptacle is rotatable about an axis disposed 'les to the axis of said bailtends to tilt downward at one side thereof when its axis is vertical, means to rock said bail-shaped member about its axis, thereby to swing the receptacle upward and over -from itsreceiving position to its discharging position, and mechanism for rotating" "the receptacle on said, bail-shaped member.

6.:Astructu-re as specified-in claim 5, said mechanism comprising a shaft extending throughone of said trunnion bearings, a

bevel pinion onsaid shaft, and a gear ring en'clrcling Signed'by 25th day "of March, 1915. I i JAMES C.; 'FRENQH. Witnesses:

RACHEL J. RICHARDSON, 1

' I'Rosa E. Snianrzm.

said receptacle to engage said- ,ineiat Chicago, Illinois, 

